Ingredients:
- 6 cups tart apples, peeled, cored, and sliced
- ¼ cup granulated sugar
- 1 teaspoon ground cinnamon
- 1 tablespoon lemon juice
- 2 tablespoons all-purpose flour
- 1 cup old-fashioned rolled oats
- ¾ cup all-purpose flour
- ½ cup packed light brown sugar
- ½ teaspoon salt
- ½ teaspoon ground cinnamon
- ½ cup unsalted butter, melted